A:7.8 g Na2O2中含有的阴离子数目为0.2NA
B:标准状况下,2.24 L CHCl3的分子数为0.1NA
C:1 L 0.1 mol/L Al2(SO4)3溶液中,Al3+的数目为0.2NA
D:0.1 mol Fe与足量稀HNO3反应,转移电子数为0.3NA
These beds are made of wood and are of high q____.
—I think it is .